Pirelli Motorsport has revealed the three mandatory compounds to be used during F1 US GP (November 1-3).

The Italian manufacturer will bring the three common compounds of the 2019 season for the F1 US GP at Circuit of the Americas, i.e C2, C3 and C4 which represents hard, medium and soft respectively as per the new naming system.

The above three compounds was first seen in Australia and then in China, Azerbaijan, France and Austria so far. It will be used in Germany, Hungary, Italy, Russia, Mexico alongside the US GP, which makes it 11 grand prix races from 19 with same combination.

As decided after the 2018 season, Pirelli has a new format with three designated names and colours for 2019 which made its debut in Australian GP. The scenario has seen a change certainly with less talk about the names of the compounds during the weekends.

The rule for the announcement of the mandatory compound sits at eight weeks in advance for European races and 14 weeks for the flyaway races. As already understood, the wet and intermediate compounds will also be taken aboard outside these three compounds.

Pirelli compounds nomination chart for 2019 F1 season:

Australia – C2, C3, C4

Bahrain – C1, C2, C3

China – C2, C3, C4

Azerbaijan – C2, C3, C4

Spain – C1, C2, C3

Monaco – C3, C4, C5

Canada – C3, C4, C5

France – C2, C3, C4

Austria – C2, C3, C4

Britain – C1, C2, C3

Germany – C2, C3, C4

Hungary – C2, C3, C4

Belgium – C1, C2, C3

Italy – C2, C3, C4

Singapore – C3, C4, C5

Russia – C2, C3, C4

Japan – C1, C2, C3

Mexico – C2, C3, C4

USA – C2, C3, C4